# Copyright 2022 Huawei Technologies Co., Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# ============================================================================
"""Video transforms functions."""

import mindspore.dataset.transforms.py_transforms as trans

from msvideo.utils.class_factory import ClassFactory, ModuleType


@ClassFactory.register(ModuleType.PIPELINE)
class VideoReshape(trans.PyTensorOperation):
    """
    Reshape data.

    Args:
        shape(tuple), shape of output.

    Examples:
        >>> #  Reshape the video shape.
        >>> transforms_list1 = [transform.Reshape(16,224,224,3)]
        >>> dataset = video_folder_dataset_1.map(operations=transforms_list1, input_columns=["video"])
    """

    def __init__(self, shape):
        self.shape = shape

    def __call__(self, x):
        return x.reshape(self.shape)
